A Lens Is Used as a Magnifier

question 73

Multiple Choice

A lens is used as a magnifier.Which of the following statements is incorrect?

• A)The lens is convex.
• B)The dioptric power of the lens is positive.
• C)The magnification is greatest when the eye focuses at the near point.
• D)The focal length of the lens must be negative.

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Definitions:

Material Inventory

Stocks of raw materials, work-in-progress, and finished goods that a company holds at any given time to ensure smooth production and sales.

Material Price Variance

The variance that arises when the actual price paid for materials differs from the standard or expected price, affecting production costs.

Fixed Contract Price

A predetermined and agreed-upon amount that will be paid for the delivery of goods or services under a contract, regardless of changes in costs or expenses.

Labour Efficiency Variance

Labour efficiency variance is the difference between the actual hours of labor consumed to produce a good or service and the standard hours expected, measured to assess productivity performance.